Design And Implement Of Fire Mapping And Analyzing System

With the development of information technology in the fire domain, the capacity of fire fighting had been strengthened and the efficiency of the fire emergency response had been improved. In the process of emergency response with IT in Tianjin fire department, many of information resources of the fire disaster had been accumulated. However, these data resources had not been used and analyzed enough. The in-depth data mining to these resources is necessary. At the same time, visualization support in querying of fire disaster is also needed.Facing to these problems given above, this article designed the fire special data analysis arithmetic firstly. They were the arithmetic of analysis in road overlay (AARO) and the arithmetic of analysis in hot spot in fire disaster (AAHSFC). AARO was based on the BFS (Breadth-First Search), but introducing the weight, which represented the distance of road, to the border. And it also introduced the mark array which logged the access state of node and the remainder distance in order to avoid repeating accessing to some node. AAHSFC was based on the k-means. In AAHSFC, the Euclidean distance was as the distance of clustering, and the centroid was as the new center of cluster after the first time.Secondly, this paper designed the Spatial Data Query and Analysis System on Fire Disaster (SDQASFD), containing the fire disaster querying subsystem, analysis subsystem in road overlay and analysis subsystem in hot spot in fire disaster. SDQASFD used hierarchical structure and the layers are: data, application architecture, basic arithmetic, general modules and application. We took the modules into packages and sent them into different layers according to the different functions and roles they acted in the system. The paper gave the description of these layers.At last, on the basis of design of arithmetic and system architecture, the SDQASFD had been developed and applied to Tianjin fire department. At the end of this paper, we used a number of instances to describe the running results of SDQASFD.